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DC fast charging not as damaging to EV batteries as expected

As convenient as DC fast charging is, there have been lots of warnings that repeated dumping of so many electrons into an electric vehicle's battery pack in such a short time would reduce the battery's life. While everyone agrees that DC fast charging does have some effect on battery life, it may not be as bad as previously expected. Over on SimanaitisSays, Dennis Simanaitis, writes about a recent presentation by Matt Shirk of the Idaho National Laboratory (INL) called DC Fast, Wireless, And Conductive Charging Evaluation Projects (PDF) that describes an ongoing test of four 2012 Nissan Leaf EVs that are being charged in two pairs of two. One pair only recharges from 50-kW DC fast chargers, which the other two sip from 3.3-kW Level 2 chargers exclusively. Otherwise, the cars are operated pretty much the same: climate is automatically set to 72 degrees, are driven on public roads around Phoenix, AZ and have the same set of dedicated drivers is rotated through the four cars. "Degradation depends more on the miles traveled than on the nature of recharging." What's most interesting are the charts on page seven of Shirk's presentation (click the image above to enlarge), which show the energy capacity of each of the four vehicles. When they were new, the four batteries were each tested to measure their energy capacity and given a 0 capacity loss baseline. They were then tested at 10,000, 20,000, 30,000 and 40,000 miles, and at each point, the DC-only EVs had roughly the same amount of battery loss as the Level 2 test subjects. The DC cars did lose a bit more at each test, but only around a 25-percent overall loss after 40k, compared to 23 percent for the Level 2 cars. Simanaitis' takeaway is that, "INL data suggest that the amount of degradation depends more on the miles traveled than on the nature of recharging." The tests are part of the INLs' Advanced Vehicle Testing Activity work and a final report is forthcoming. These initial numbers from IPL do mesh with other research into DC fast charging, though. Mitsubishi said daily fast charging wouldn't really hurt the battery in the i-MiEV and MIT tests of a Fisker Karma battery showed just 10-percent loss over 1,500 rapid charge-discharge cycles.

Recharge Wrap-up: Mercedes-Benz B-Class Electric Drive goes on sale in Europe, Spain gets Nissan Leaf taxis

The new Mercedes-Benz B-Class Electric Drive goes on sale in Europe on November 3, with deliveries starting before the end of the year. Developed with the help of Tesla, the new electric B-Class offers more than 132 kilowatts (177 horsepower) and 250 pound-feet of torque. It features Economy Plus, Economy and Sport driving modes. An optional radar support system uses the collision prevention assist sensors to help make smarter decisions about when and how to use the regenerative braking. The B-Class Electric Drive also offers an optional Range Plus button, which can unlock more battery capacity when charging for the occasional longer drive. Learn more in the press release below. Racing returns to the streets of Miami for the first time in more than a decade for the Formula E Miami ePrix on March 14, 2015. Formula E has revealed the track layout, which takes the race around the Miami Heat's home court, American Airlines Arena, along the Biscayne Bay. "This event will help to make Miami more of a sports city," says Mayor Thomas Regalado. "In addition, we will show the younger generations that you may have motor racing without noise or pollution." Read more about the event at the Formula E website and see the track layout in detail here. Hyundai has delivered the first ix35 Fuel Cell vehicles to customers in the UK, including clean energy company ITM Power. ITM is responsible for three of the hydrogen refueling stations being built around the EU as part of the Hydrogen For Innovative Vehicles project - the same project that helped bring the Hyundai ix35 (also known as the Tucson) Fuel Cell to Europe. ITM's 700-bar hydrogen stations will be built in London by Spring 2015, each with its own electrolyzer system on site. In the meantime, ITM will use the ix35 for commutes between London and Sheffield, refueling at a site that uses wind-generated electricity from an on-site turbine to power the electrolyzer to make the hydrogen. Learn more in the press release below. Demand for aluminum is expected to climb as China builds more electric cars. Aluminum supplier Novelis says demand will likely increase 30 percent annually for the next 10 years in China, Japan and Korea, and possibly more depending on how China's plan to increase EV use and decrease air pollution shakes out. Read more at Bloomberg. Barcelona and Madrid have received their first all-electric taxis in the form of Nissan Leaf EVs.

'Zero' chance of Renault taking over Nissan, Mitsubishi, says Ghosn

TOKYO — Renault SA absorbing Nissan Motor Co. and Mitsubishi Motors Corp is not an option as the carmakers look to strengthen their partnership while retaining their autonomy, alliance chairman Carlos Ghosn said on Friday. "Anybody who will ask Nissan and Mitsubishi to become wholly owned subsidiaries of Renault has zero chance of getting a result," Ghosn told shareholders of Mitsubishi Motors at a meeting. He also serves as chief executive of France's Renault. The alliance was the world's top-selling passenger vehicle maker in 2017, but as the global auto industry consolidates, it is looking to strengthen its position before the 64-year-old Ghosn, its main architect, retires in the coming years after overseeing the partnership for nearly 20 years. We reported in March that the carmakers were discussing a deeper tie-up, which could see the French government, a major shareholder in Renault, give up influence at Renault and the French carmaker relinquish control over Nissan. The three automakers have a unique partnership designed to leverage their combined scale to save on costs including R&D, parts procurement and production to better compete with rivals Volkswagen AG and Toyota Motor Corp. They are also interlinked by their shareholding structure. Renault holds 43.4 percent of shares in Nissan, while Nissan owns 15 percent of Renault, with no voting rights in a partnership that began in 1999. Mitsubishi Motors joined the alliance in 2016 after Nissan took a 34 percent controlling stake in the smaller automaker. Nissan CEO Hiroto Saikawa has said the alliance is not discussing a "full merger." Ghosn said that while the focus of the alliance was to sell more cars and increase profitability by reducing unnecessary duplication of processes, he wanted each of the three automakers to maintain their independence, which differentiated the group from Toyota and Volkswagen. "We need to work together ... to find a system by which what we have today, which is working very well, can continue in the future no matter who is leading the alliance," he said. "We need to prove that this is sustainable five years down the road, 10 years down the road, 15 years down the road." In a Figaro interview published last week, Ghosn was upbeat about the prospect of securing a new deal for the alliance despite its extreme political sensitivity in France and Japan, saying a plan would need to be announced "well before" the end of his four-year term at the helm of Renault in 2022.